sc_random.c: use a default seed if no xtimer is present
sc_random.c: use a default seed if no xtimer is present

mtausig/RIOT,immesys/RiSyn,basilfx/RIOT,adjih/RIOT,shady33/RIOT,BytesGalore/RIOT,kerneltask/RIOT,plushvoxel/RIOT,kYc0o/RIOT,d00616/RIOT,roberthartung/RIOT,biboc/RIOT,cladmi/RIOT,kYc0o/RIOT,rakendrathapa/RIOT,attdona/RIOT,jremmert-phytec-iot/RIOT,shady33/RIOT,plushvoxel/RIOT,FrancescoErmini/RIOT,gebart/RIOT,thomaseichinger/RIOT,OlegHahm/RIOT,jbeyerstedt/RIOT-OTA-update,jremmert-phytec-iot/RIOT,wentaoshang/RIOT,gebart/RIOT,syin2/RIOT,kerneltask/RIOT,rfuentess/RIOT,ks156/RIOT,rfuentess/RIOT,aeneby/RIOT,yogo1212/RIOT,mfrey/RIOT,TobiasFredersdorf/RIOT,tfar/RIOT,RIOT-OS/RIOT,josephnoir/RIOT,attdona/RIOT,roberthartung/RIOT,ant9000/RIOT,MohmadAyman/RIOT,jbeyerstedt/RIOT-OTA-update,backenklee/RIOT,biboc/RIOT,OTAkeys/RIOT,brettswann/RIOT,roberthartung/RIOT,ks156/RIOT,alignan/RIOT,neiljay/RIOT,wentaoshang/RIOT,LudwigKnuepfer/RIOT,shady33/RIOT,malosek/RIOT,kerneltask/RIOT,aeneby/RIOT,backenklee/RIOT,adrianghc/RIOT,gautric/RIOT,dkm/RIOT,binarylemon/RIOT,neiljay/RIOT,immesys/RiSyn,TobiasFredersdorf/RIOT,avmelnikoff/RIOT,TobiasFredersdorf/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,authmillenon/RIOT,immesys/RiSyn,altairpearl/RIOT,mfrey/RIOT,jbeyerstedt/RIOT-OTA-update,shady33/RIOT,wentaoshang/RIOT,rajma996/RIOT,jasonatran/RIOT,jasonatran/RIOT,malosek/RIOT,authmillenon/RIOT,OlegHahm/RIOT,yogo1212/RIOT,Josar/RIOT,toonst/RIOT,Ell-i/RIOT,adrianghc/RIOT,kaleb-himes/RIOT,neumodisch/RIOT,gebart/RIOT,syin2/RIOT,hamilton-mote/RIOT-OS,plushvoxel/RIOT,smlng/RIOT,backenklee/RIOT,mfrey/RIOT,katezilla/RIOT,dailab/RIOT,aeneby/RIOT,Ell-i/RIOT,jfischer-phytec-iot/RIOT,adjih/RIOT,biboc/RIOT,rajma996/RIOT,FrancescoErmini/RIOT,plushvoxel/RIOT,katezilla/RIOT,LudwigOrtmann/RIOT,d00616/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,kaleb-himes/RIOT,hamilton-mote/RIOT-OS,Hyungsin/RIOT-OS,gautric/RIOT,Yonezawa-T2/RIOT,kbumsik/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,yogo1212/RIOT,smlng/RIOT,rakendrathapa/RIOT,Josar/RIOT,jremmert-phytec-iot/RIOT,Hyungsin/RIOT-OS,alignan/RIOT,OTAkeys/RIOT,rajma996/RIOT,authmillenon/RIOT,avmelnikoff/RIOT,malosek/RIOT,BytesGalore/RIOT,jremmert-phytec-iot/RIOT,alignan/RIOT,RIOT-OS/RIOT,ant9000/RIOT,OlegHahm/RIOT,dkm/RIOT,OTAkeys/RIOT,zhuoshuguo/RIOT,miri64/RIOT,kaleb-himes/RIOT,immesys/RiSyn,kYc0o/RIOT,malosek/RIOT,BytesGalore/RIOT,MohmadAyman/RIOT,rajma996/RIOT,MohmadAyman/RIOT,jfischer-phytec-iot/RIOT,Hyungsin/RIOT-OS,ant9000/RIOT,yogo1212/RIOT,altairpearl/RIOT,rousselk/RIOT,neumodisch/RIOT,smlng/RIOT,cladmi/RIOT,LudwigKnuepfer/RIOT,alignan/RIOT,dailab/RIOT,smlng/RIOT,kb2ma/RIOT,gautric/RIOT,miri64/RIOT,lazytech-org/RIOT,jremmert-phytec-iot/RIOT,Ell-i/RIOT,kb2ma/RIOT,shady33/RIOT,lazytech-org/RIOT,x3ro/RIOT,dailab/RIOT,brettswann/RIOT,kaspar030/RIOT,toonst/RIOT,malosek/RIOT,ks156/RIOT,cladmi/RIOT,d00616/RIOT,gebart/RIOT,adjih/RIOT,malosek/RIOT,adrianghc/RIOT,kaspar030/RIOT,wentaoshang/RIOT,yogo1212/RIOT,beurdouche/RIOT,adjih/RIOT,thomaseichinger/RIOT,RIOT-OS/RIOT,cladmi/RIOT,tfar/RIOT,OTAkeys/RIOT,neumodisch/RIOT,Hyungsin/RIOT-OS,LudwigOrtmann/RIOT,authmillenon/RIOT,Yonezawa-T2/RIOT,wentaoshang/RIOT,kerneltask/RIOT,kaleb-himes/RIOT,rakendrathapa/RIOT,neumodisch/RIOT,MohmadAyman/RIOT,ant9000/RIOT,josephnoir/RIOT,rousselk/RIOT,A-Paul/RIOT,BytesGalore/RIOT,lazytech-org/RIOT,rakendrathapa/RIOT,kaspar030/RIOT,rajma996/RIOT,jbeyerstedt/RIOT-OTA-update,binarylemon/RIOT,zhuoshuguo/RIOT,kaspar030/RIOT,FrancescoErmini/RIOT,rakendrathapa/RIOT,gebart/RIOT,rakendrathapa/RIOT,zhuoshuguo/RIOT,RIOT-OS/RIOT,asanka-code/RIOT,binarylemon/RIOT,neiljay/RIOT,RIOT-OS/RIOT,TobiasFredersdorf/RIOT,rousselk/RIOT,jfischer-phytec-iot/RIOT,basilfx/RIOT,roberthartung/RIOT,brettswann/RIOT,basilfx/RIOT,aeneby/RIOT,rfuentess/RIOT,kYc0o/RIOT,tfar/RIOT,toonst/RIOT,x3ro/RIOT,LudwigKnuepfer/RIOT,miri64/RIOT,neiljay/RIOT,d00616/RIOT,gautric/RIOT,avmelnikoff/RIOT,beurdouche/RIOT,alignan/RIOT,attdona/RIOT,altairpearl/RIOT,tfar/RIOT,syin2/RIOT,kYc0o/RIOT,kbumsik/RIOT,mfrey/RIOT,adjih/RIOT,jasonatran/RIOT,toonst/RIOT,binarylemon/RIOT,brettswann/RIOT,attdona/RIOT,katezilla/RIOT,kb2ma/RIOT,beurdouche/RIOT,TobiasFredersdorf/RIOT,gautric/RIOT,tfar/RIOT,A-Paul/RIOT,Yonezawa-T2/RIOT,jbeyerstedt/RIOT-OTA-update,A-Paul/RIOT,neumodisch/RIOT,dailab/RIOT,ks156/RIOT,rfuentess/RIOT,LudwigKnuepfer/RIOT,rajma996/RIOT,jasonatran/RIOT,Yonezawa-T2/RIOT,zhuoshuguo/RIOT,asanka-code/RIOT,jasonatran/RIOT,neumodisch/RIOT,FrancescoErmini/RIOT,josephnoir/RIOT,kaspar030/RIOT,Yonezawa-T2/RIOT,kerneltask/RIOT,ks156/RIOT,plushvoxel/RIOT,dkm/RIOT,smlng/RIOT,zhuoshuguo/RIOT,brettswann/RIOT,adrianghc/RIOT,BytesGalore/RIOT,avmelnikoff/RIOT,cladmi/RIOT,LudwigOrtmann/RIOT,Josar/RIOT,syin2/RIOT,hamilton-mote/RIOT-OS,rousselk/RIOT,OTAkeys/RIOT,LudwigKnuepfer/RIOT,kbumsik/RIOT,mtausig/RIOT,kbumsik/RIOT,Ell-i/RIOT,d00616/RIOT,asanka-code/RIOT,katezilla/RIOT,biboc/RIOT,aeneby/RIOT,OlegHahm/RIOT,Hyungsin/RIOT-OS,kaleb-himes/RIOT,basilfx/RIOT,neiljay/RIOT,altairpearl/RIOT,jfischer-phytec-iot/RIOT,kbumsik/RIOT,josephnoir/RIOT,mtausig/RIOT,wentaoshang/RIOT,jremmert-phytec-iot/RIOT,josephnoir/RIOT,kb2ma/RIOT,OlegHahm/RIOT,avmelnikoff/RIOT,LudwigOrtmann/RIOT,LudwigOrtmann/RIOT,x3ro/RIOT,dailab/RIOT,brettswann/RIOT,backenklee/RIOT,A-Paul/RIOT,Josar/RIOT,binarylemon/RIOT,syin2/RIOT,A-Paul/RIOT,katezilla/RIOT,backenklee/RIOT,shady33/RIOT,mfrey/RIOT,beurdouche/RIOT,FrancescoErmini/RIOT,hamilton-mote/RIOT-OS,thomaseichinger/RIOT,kb2ma/RIOT,immesys/RiSyn,miri64/RIOT,authmillenon/RIOT,thomaseichinger/RIOT,jfischer-phytec-iot/RIOT,basilfx/RIOT,FrancescoErmini/RIOT,lazytech-org/RIOT,biboc/RIOT,asanka-code/RIOT,dkm/RIOT,x3ro/RIOT,altairpearl/RIOT,zhuoshuguo/RIOT,mtausig/RIOT,Josar/RIOT,attdona/RIOT,MohmadAyman/RIOT,ant9000/RIOT,Ell-i/RIOT,MohmadAyman/RIOT,asanka-code/RIOT,Yonezawa-T2/RIOT,hamilton-mote/RIOT-OS,d00616/RIOT,rfuentess/RIOT,yogo1212/RIOT,asanka-code/RIOT,binarylemon/RIOT,rousselk/RIOT,dkm/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,roberthartung/RIOT,lazytech-org/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,adrianghc/RIOT,altairpearl/RIOT,x3ro/RIOT,mtausig/RIOT,immesys/RiSyn,miri64/RIOT,thomaseichinger/RIOT,toonst/RIOT,rousselk/RIOT,attdona/RIOT,authmillenon/RIOT,beurdouche/RIOT,LudwigOrtmann/RIOT